vobfus | 0504100b25276f774f0ff7178b5e926eb56b50b82622c7379e7cfbb80d1ccaa3

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-09-2024 14:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Size

764KB
MD5

cfb53796cdb6a32fa8ac714456377d81
SHA1

ab8bba28838ca7f325ac4e0c00540c47a44d36c5
SHA256

0504100b25276f774f0ff7178b5e926eb56b50b82622c7379e7cfbb80d1ccaa3
SHA512

657531ad98f0264fe6d15bbd7007817f15c6b19a21900c3abcddd17ccd63341be5c40f56b22b31ad0d0baf5a8d48314180a9053c269867bcd736453cefeef9f7
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1kHjk+0oLnWFnd:Xo/BHng5HaVG4G/1z+QVMbg1Eoh

Score

10^/10

vobfus discovery persistence worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	44	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2856	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2856	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2856	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
2856	cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cfb53796cdb6a32fa8ac714456377d81_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
764KB

MD5
6e0fa35bb6bad0ff4e7f46eda010ec29

SHA1
9d551b6b002f7b8236b2929bbdf31196eafeaa04

SHA256
db67041870232ea0c2b62e3e2975afbd872b92eed6f6dd5f297a247dbbf7ab79

SHA512
57757fc89d290e8d88bd8421c5b366a13898301628b36777ed98b1cd166ddd68e976b452278cca1cfcf0b638735c0c1058d2a48c32928133ad39b3ba8d400bb5

Download Submit
memory/2856-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2856-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2856-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2856-281-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads